题目内容
下列算式中,____的得数最大.
- A.
×
- B.
÷
- C.
×
- D.
÷
B
分析:根据分数乘法、除法的计算法则分别计算出各式的结果,然后进行比较即可.
解答:
=
,
=
,
,
=
,
,
,
,
,
因为:
>
>
>
;
所以:
>
>
>
.
答:
的得数最大.
故选:B.
点评:此题考查的目的是牢固掌握分数乘法、乘法的计算法则以及分数大小比较的方法.
分析:根据分数乘法、除法的计算法则分别计算出各式的结果,然后进行比较即可.
解答:
![](http://thumb.1010pic.com/pic5/latex/582691.png)
![](http://thumb.1010pic.com/pic5/latex/125598.png)
![](http://thumb.1010pic.com/pic5/latex/582692.png)
![](http://thumb.1010pic.com/pic5/latex/335.png)
![](http://thumb.1010pic.com/pic5/latex/582693.png)
![](http://thumb.1010pic.com/pic5/latex/582694.png)
![](http://thumb.1010pic.com/pic5/latex/8.png)
![](http://thumb.1010pic.com/pic5/latex/582695.png)
![](http://thumb.1010pic.com/pic5/latex/582696.png)
![](http://thumb.1010pic.com/pic5/latex/582697.png)
![](http://thumb.1010pic.com/pic5/latex/582698.png)
因为:
![](http://thumb.1010pic.com/pic5/latex/582699.png)
![](http://thumb.1010pic.com/pic5/latex/582700.png)
![](http://thumb.1010pic.com/pic5/latex/582701.png)
![](http://thumb.1010pic.com/pic5/latex/582702.png)
所以:
![](http://thumb.1010pic.com/pic5/latex/582703.png)
![](http://thumb.1010pic.com/pic5/latex/582704.png)
![](http://thumb.1010pic.com/pic5/latex/582705.png)
![](http://thumb.1010pic.com/pic5/latex/582691.png)
答:
![](http://thumb.1010pic.com/pic5/latex/582703.png)
故选:B.
点评:此题考查的目的是牢固掌握分数乘法、乘法的计算法则以及分数大小比较的方法.
![](http://thumb2018.1010pic.com/images/loading.gif)
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